Light diffusing device
Apparatus for the display of illuminated translucent documents
Surface illumination device using optical conductors Patent #: 4845596
ApplicationNo. 525697 filed on 05/21/1990
US Classes:362/554With optical fiber bundle
ExaminersPrimary: Ostrager, Allen M.
Attorney, Agent or Firm
International ClassF21V 007/04
AbstractAn illumination panel, which comprises an optical fiber sheet formed by arranging a plurality of optical fibers having a core-sheath structure, which has one end optically connected to a light source and a light-leaking portion on at least one surface thereof, a surface panel arranged on the front surface side of the optical fiber sheet, and a reflecting layer arranged on the back surface side of the optical fiber sheet, wherein the light-leaking portion is formed of a plurality of flaws extending to the core of the optical fiber from the sheath thereof, the light-leaking width of the light-leaking portion increases toward the side far from the light source from the side near to the light source, the presence density of the flaws increases toward the side far from the light source from the side near to the light source, and the depth of the flaws increases toward the side far from the light source from the side near to the light source, whereby the entire illumination surface is uniformly illuminated.
Field of SearchEdge illuminated modifier or light rod/pipe